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[PATCH] x86/altp2m: don't consider "active" when enabling failed
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 25 Aug 2021 11:31:29 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>
- Delivery-date: Wed, 25 Aug 2021 09:31:43 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
We should not rely on guests to not use altp2m after reporting failure
of HVMOP_altp2m_set_domain_state to them. Set "active" back to false in
this case.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -4609,6 +4609,8 @@ static int do_altp2m_op(
if ( ostate )
p2m_flush_altp2m(d);
}
+ else if ( rc )
+ d->arch.altp2m_active = false;
domain_unpause_except_self(d);
break;
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